Applying Classification Trees to Hospital Administrative Data to Identify Patients with Lower Gastrointestinal Bleeding.

ABSTRACT:

Background

Lower gastrointestinal bleeding (LGIB) is a common cause of acute hospitalization. Currently, there is no accepted standard for identifying patients with LGIB in hospital administrative data. The objective of this study was to develop and validate a set of classification algorithms that use hospital administrative data to identify LGIB.

Methods

Our sample consists of patients admitted between July 1, 2001 and June 30, 2003 (derivation cohort) and July 1, 2003 and June 30, 2005 (validation cohort) to the general medicine inpatient service of the University of Chicago Hospital, a large urban academic medical center. Confirmed cases of LGIB in both cohorts were determined by reviewing the charts of those patients who had at least 1 of 36 principal or secondary Intern

SUBMITTER: Siddique J 

PROVIDER: S-EPMC4583289 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature